You can do a telnet to the device... you should be able to work with it but your serial session will show the garbage. Regards, Rene > -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > owner@xxxxxxxxxxxxxxx] On Behalf Of Michael Trimarchi > Sent: Wednesday, June 16, 2010 9:47 AM > To: Han Wang > Cc: linux-omap@xxxxxxxxxxxxxxx > Subject: Re: Serial console not working after waking up from sleep > > Hi > > Han Wang wrote: > > Hi, michael, > > > > I have the no_console_suspend option in my boot command line, I am > > not sure if that is the option you were trying to point me to in the > > last email? > > I have said that i have no problem when I remove that option. > Can you try to echo 0 to timeout of the serial device? > > Michael > > > > > anyway, I added no_debug_console into my boot command arg, but that > > doesn't seem to help with my problem. > > > > any ideas? > > > > Thanks, > > Han > > On Wed, Jun 16, 2010 at 2:09 AM, Michael Trimarchi > > <michael@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > >> Han Wang wrote: > >>> Hi, > >>> > >>> I am testing the 2.6.35-rc1 pm branch code on Overo. The system > >>> boots ok. (I can provide booting log if that is necessary) However, > >>> when I use "echo mem > /sys/power/state" to send overo to sleep and > >>> wake it up by enter a key into serial console. I got garbage > >>> characters in the serial console, and I can not enter anything into > >>> the console anymore. I wonder if anyone has encountered a similar > >>> problem, and please give me some suggestion. > >>> > >>> I have appended command log below. > >>> > >>> root@overo:~# echo mem > /sys/power/state > >>> PM: Syncing filesystems ... done. > >>> PM: Preparing system for mem sleep > >>> PM: Adding info for No Bus:vcs63 > >>> PM: Adding info for No Bus:vcsa63 > >>> Freezing user space processes ... (elapsed 0.02 seconds) done. > >>> Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. > >>> PM: Entering mem sleep > >>> i2c_omap i2c_omap.1: preparing suspend > >>> i2c_omap i2c_omap.3: preparing suspend > >>> platform overo_lcd: preparing suspend > >>> serial8250 serial8250.0: preparing suspend, may wakeup > >>> serial8250 serial8250.1: preparing suspend, may wakeup > >>> serial8250 serial8250.2: preparing suspend, may wakeup > >>> platform omap2-nand: preparing suspend > >>> platform musb_hdrc: preparing suspend > >>> platform smsc911x.0: preparing suspend > >>> platform smsc911x.1: preparing suspend > >>> platform omap2_mcspi.1: preparing suspend > >>> platform omap2_mcspi.2: preparing suspend > >>> platform omap2_mcspi.3: preparing suspend > >>> platform omap2_mcspi.4: preparing suspend > >>> arm-pmu arm-pmu.0: preparing suspend > >>> platform omap_rng: preparing suspend > >>> platform omapfb: preparing suspend > >>> twl4030_gpio twl4030_gpio: preparing suspend > >>> mmci-omap-hs mmci-omap-hs.0: preparing suspend > >>> mmci-omap-hs mmci-omap-hs.1: preparing suspend > >>> twl_reg twl_reg.17: preparing suspend > >>> twl_reg twl_reg.18: preparing suspend > >>> twl_reg twl_reg.19: preparing suspend > >>> twl4030_usb twl4030_usb: preparing suspend, may wakeup > >>> twl_reg twl_reg.6: preparing suspend > >>> serial8250 serial8250: preparing suspend > >>> mmcblk mmc0:fb2a: legacy suspend > >>> serial8250 serial8250: suspend > >>> i2c i2c-3: suspend > >>> twl_reg twl_reg.6: suspend > >>> twl4030_usb twl4030_usb: suspend, may wakeup > >>> twl_reg twl_reg.19: suspend > >>> twl_reg twl_reg.18: suspend > >>> twl_reg twl_reg.17: suspend > >>> mmci-omap-hs mmci-omap-hs.1: suspend > >>> mmci-omap-hs mmci-omap-hs.0: suspend > >>> twl4030_gpio twl4030_gpio: suspend > >>> dummy 1-004b: suspend > >>> dummy 1-004a: suspend > >>> dummy 1-0049: suspend > >>> twl 1-0048: suspend, may wakeup > >>> i2c i2c-1: suspend > >>> platform omapfb: suspend > >>> platform omap_rng: suspend > >>> arm-pmu arm-pmu.0: suspend > >>> platform omap2_mcspi.4: suspend > >>> platform omap2_mcspi.3: suspend > >>> platform omap2_mcspi.2: suspend > >>> platform omap2_mcspi.1: suspend > >>> platform smsc911x.1: suspend > >>> platform smsc911x.0: suspend > >>> platform musb_hdrc: suspend > >>> platform omap2-nand: suspend > >>> serial8250 serial8250.2: suspend, may wakeup > >>> serial8250 serial8250.1: suspend, may wakeup > >>> serial8250 serial8250.0: suspend, may wakeup > >>> platform overo_lcd: suspend > >>> i2c_omap i2c_omap.3: suspend > >>> i2c_omap i2c_omap.1: suspend > >>> PM: suspend of devices complete after 201.965 msecs > >>> serial8250 serial8250: LATE suspend > >>> i2c i2c-3: LATE suspend > >>> twl_reg twl_reg.6: LATE suspend > >>> twl4030_usb twl4030_usb: LATE suspend, may wakeup > >>> twl_reg twl_reg.19: LATE suspend > >>> twl_reg twl_reg.18: LATE suspend > >>> twl_reg twl_reg.17: LATE suspend > >>> mmci-omap-hs mmci-omap-hs.1: LATE suspend > >>> mmci-omap-hs mmci-omap-hs.0: LATE suspend > >>> twl4030_gpio twl4030_gpio: LATE suspend > >>> dummy 1-004b: LATE suspend > >>> dummy 1-004a: LATE suspend > >>> dummy 1-0049: LATE suspend > >>> twl 1-0048: LATE suspend, may wakeup > >>> i2c i2c-1: LATE suspend > >>> platform omapfb: LATE suspend > >>> platform omap_rng: LATE suspend > >>> arm-pmu arm-pmu.0: LATE suspend > >>> platform omap2_mcspi.4: LATE suspend > >>> platform omap2_mcspi.3: LATE suspend > >>> platform omap2_mcspi.2: LATE suspend > >>> platform omap2_mcspi.1: LATE suspend > >>> platform smsc911x.1: LATE suspend > >>> platform smsc911x.0: LATE suspend > >>> platform musb_hdrc: LATE suspend > >>> platform omap2-nand: LATE suspend > >>> serial8250 serial8250.2: LATE suspend, may wakeup > >>> serial8250 serial8250.1: LATE suspend, may wakeup > >>> serial8250 serial8250.0: LATE suspend, may wakeup > >>> platform overo_lcd: LATE suspend > >>> i2c_omap i2c_omap.3: LATE suspend > >>> i2c_omap i2c_omap.1: LATE suspend > >>> PM: late suspend of devices complete after 103.088 msecs > >>> Successfully put all powerdomains to target state > >>> i2c_omap i2c_omap.1: EARLY resume > >>> i2c_omap i2c_omap.3: EARLY resume > >>> platform overo_lcd: EARLY resume > >>> serial8250 serial8250.0: EARLY resume > >>> serial8250 serial8250.1: EARLY resume > >>> serial8250 serial8250.2: EARLY resume > >>> platform omap2-nand: EARLY resume > >>> platform musb_hdrc: EARLY resume > >>> platform smsc911x.0: EARLY resume > >>> platform smsc911x.1: EARLY resume > >>> platform omap2_mcspi.1: EARLY resume > >>> platform omap2_mcspi.2: EARLY resume > >>> platform omap2_mcspi.3: EARLY resume > >>> platform omap2_mcspi.4: EARLY resume > >>> arm-pmu arm-pmu.0: EARLY resume > >>> platform omap_rng: EARLY resume > >>> platform omapfb: EARLY resume > >>> i2c i2c-1: EARLY resume > >>> twl 1-0048: EARLY resume > >>> dummy 1-0049: EARLY resume > >>> dummy 1-004a: EARLY resume > >>> dummy 1-004b: EARLY resume > >>> twl4030_gpio twl4030_gpio: EARLY resume > >>> mmci-omap-hs mmci-omap-hs.0: EARLY resume > >>> mmci-omap-hs mmci-omap-hs.1: EARLY resume > >>> twl_reg twl_reg.17: EARLY resume > >>> twl_reg twl_reg.18: EARLY resume > >>> twl_reg twl_reg.19: EARLY resume > >>> twl4030_usb twl4030_usb: EARLY resume > >>> twl_reg twl_reg.6: EARLY resume > >>> i2c i2c-3: EARLY resume > >>> serial8250 serial8250: EARLY resume > >>> PM: early resume of devices complete after 97.625 msecs > >>> i2c_omap i2c_omap.1: resume > >>> i2c_omap i2c_omap.3: resume > >>> platform overo_lcd: resume > >>> serial8250 serial8250.0: resume > >>> serial8250 serial8250.1: resume > >>> serial8250 serial8250.2: resume > >>> > >>> > ŨuV=V=ý_―hþžþž.?ýRŪHlŌŌūŧŪ=ū=―īŪŋQ*^žþQū99:ūŌŌýRNũõtŪĻĻ:;;Tŧ?ÉQQ·īÖīË\ŋvéÝ > ĸ > >>> (garbage string...) > >> The problem is releated to no_debug_console option. > >> > >> Michael Trimarchi > >> > >>> Thanks, > >> > > > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at 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